Emily Blunt Is Afraid of Herself in the New 'Girl on the Train' Trailer

A new trailer for the upcoming thriller "The Girl on the Train" doubles down on the madness encircling protagonist Rachel (Emily Blunt), who thinks she's seen something terrible happen to a young woman -- but may have been more involved in the crime than she actually remembers.

Much like the first trailer, this new promo sets an eerie mood, echoing Rachel's own sense of foreboding as she begins to discover the connections between herself, her ex-husband (Justin Theroux), and the missing woman (Haley Bennett), who turns out to be her ex's nanny. We see several scenes of Rachel trembling as she washes something dark off her hands (is it just dirt, or maybe blood?), and nurses some serious looking bruises and scratches covering her back.

A weeping Rachel admits, "I'm afraid of myself," and based on what we've seen from the flick so far, it's not difficult to understand that feeling. The why of it, however, remains an intriguing mystery for now.

"The Girl on the Train," based on the novel by Paula Hawkins, also stars Rebecca Ferguson, Luke Evans, Allison Janney, Edgar Ramirez, Lisa Kudrow, and Laura Prepon. It's due in theaters on October 7.

Commuter Rachel Watson (Emily Blunt) catches daily glimpses of a seemingly perfect couple, Scott and Megan, from the window of her train. One day, Watson witnesses something shocking unfold in the backyard of the strangers' home. Rachel tells the authorities what she thinks she saw after learning that Megan is now missing and feared dead. Unable to trust her own memory, the troubled woman begins her own investigation, while police suspect that Rachel may have crossed a dangerous line. Read More